Allelopathy Journal
  • Year: 2006
  • Volume: 17
  • Issue: 2

Molecular mapping of QTLs associated with allelopathic effect on lettuce root growth using recombinant inbred population in rice

  • Author:
  • Yanjun Dong12, Dongzhi Lin2, Y. Sugimoto2, Lijun Luo3, Hanwei Mei3, M. Matsuo2
  • Total Page Count: 8
  • Page Number: 199 to 206

1College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China. E-mail: dong@shnu.edu.cn; dong@cc.miyazaki-u.ac.jp

2Agricultural Faculty, Miyazaki University, Miyazaki City, 889–2192, Japan

3Shanghai Agro-biological Gene Center, Shanghai, 201106, China

*Correspondence author

Abstract

This study was conducted to identify the QTLs controlling the allelopathic effect of rice on lettuce root growth using recombinant inbred (RI) lines derived from a cross between a Japonica cultivar (Asominori) and an indica cultivar (IR24). A total of three QTLs associated with allelopathic effect on lettuce root growth were identified and mapped to chromosomes 2, 8 and 11. The QTL with the largest effect, qAE-11, located between markers C1003A and C1172, was mapped to chromosome 11 and explained 15.34% of total variation in allelopathic effect. The other two QTLs, qAE-2 on chromosome 2 and qAE-8 on chromosome 8, explained 6.31% and 7.14% of the variation, respectively. The tightly linked molecular markers that flank the QTLs, detected in this study, may be useful for genetic improvement of allelopathy in rice using marker-assisted selection.

Keywords

Allelopathy, lettuce (Lactuca sativa L.), QTL, rice